Package javafx.concurrent

A Worker is an object which performs some work in one or more background
threads, and who's state is observable and available to JavaFX applications
and is usable from the main JavaFX Application thread.

Package javafx.concurrent Description

Provides the set of classes for javafx.task.

This package provides the ability to run application code on threads other
than the JavaFX event dispatch thread. The ability to control the execution
and track the progress of the application code is also provided.